In May, Slough typically sees daytime highs of 16.0°C and overnight lows around 7.0°C. Compared to the annual average high of 13.2°C, May runs +2.8°C.
May in Slough averages a daytime high of 16.0°C and an overnight low of 7.0°C.
May runs +2.8°C compared to Slough's annual average high of 13.2°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 16.0°C and cooler evenings around 7.0°C.